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use clap::Parser;

#[derive(Parser)]
#[clap(author, version, about, long_about = None)]
struct Cli {
    /// Network port to use
    #[clap(parse(try_from_str))]
    port: usize,
}

fn main() {
    let cli = Cli::parse();

    println!("PORT = {}", cli.port);
}